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| An Input EMI Analysis of Interleaved Critical Conduction Mode Boost PFC Converter with Coupled Inductor |
| Yang Fei1, Ruan Xinbo1, Ji Qing1, Ye Zhihong2 |
| 1. Nanjing University of Aeronautics and Astronautics Nanjing 210016 China 2. Lite-On Technology Corp., Nanjing 210019 China |
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Abstract The differential-mode(DM) electromagnetic interference(EMI) noise of two-phase interleaved Boost PFC converter operating in CRM with non-coupled and coupled indcutor are analyzed. The DM noise spectra are calculated based on an EMI receiver model and the worst spectra are obtained. Furthermore, in accordance with the relation ship between the magnitude of inductor current ripple and the DM noise, the worst conditions which see the maximum noise at 150kHz are figured out. Finally, the mathematical and experimental results are provided to verify the analysis.
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Received: 21 October 2011
Published: 25 March 2014
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2013, Vol. 28 
